CALOGIC CVA2411 Improved low cost triple crt driver Datasheet

Improved
Low Cost Triple
CRT Driver
CORPORATION
CVA2411TX
FEATURES
•
•
•
•
•
DESCRIPTION
Ease of Use
Small Heat Sink
OSD Option
EMI Control Option
Excellent Gray Scale Linearity
APPLICATIONS
•
CRT Displays for 1280 x 1024 Resolution with Pixel
Clock Frequency up to 160MHz
The CVA2411TX is an improved low cost version that features
excellent gray scale linearity with no crossover distortion and
less EMI for 64KHz (horizontal scanning frequency) monitors.
The CVA2411TX can be used with pre-amplifiers where the
common emitter transistor is part of the pre-amp. With this
device, OSD, peaking coil, and peaking capacitor can be
available. A very small heat sink is required to pick-up ground
from the standard TO220 package Tab.
With 65MHz
bandwidth, the device is an ideal low cost solution for 14", 15"
and 17" monitors.
ORDERING INFORMATION
Part
Package
Temperature
CVA2411TX
T11A
-20oC to +100oC
CONNECTION DIAGRAM AND SIMPLIFIED SCHEMATIC
11
9
VCC
11
VC C
10
VOUT
COLLECTOR
8
COLLECTOR
3,6,9
EMITTER
7
EMITTER
VOUT
6
COLLECTOR
2,5,10
5
VOUT
4
EMITTER
3
COLLECTOR
2
1
VBIAS
Q3
1
VOUT
VBIAS
EMITTER
4,7,8
TAB
1H-39
TAB = GND
TOP VIEW
T11A PACKAGE
1B-17
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CVA2411TX
CORPORATION
ABSOLUTE MAXIMUM RATINGS
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95V
Storage Temperature . . . . . . . . . . . . . . . . . . . -25oC to +100oC
Operating Temperature . . . . . . . . . . . . . . . . . -20oC to +100oC
Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300oC
DC ELECTRICAL CHARACTERISTICS TCASE = +25oC
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNITS
BVCEO
Collector-Emitter Breakdown Voltage (I c = 1mA)
95
V
BVCBO
Collector-Base Breakdown Voltage (Ic = 100µA)
100
V
BVEBO
Emitter-Base Breakdown Voltage (IE = 100µA)
3
V
HFE
DC Current Gain (Ic = 35mA)
30
50
V
VBES
0.95
VCES
0.3
VBE(ON)
0.6
ICEO
100
nA
MAX
UNITS
AC ELECTRICAL CHARACTERISTICS TCASE = +25oC
SYMBOL
CHARACTERISTCS
MIN
TYP
Cob
Output Capacitance
3
pF
Ccb
Junction Capacitance
2
pF
Cib
Input Capacitance
8
pF
ft
Current Gain Bandwidth Product (Ic = 35mA)
150
MHz
FIGURE 1. TYPICAL CHARACTERISTICS
RISE TIME
FALL TIME
102.5V
10V/DIV
10V/DIV
102.5V
2.5V
2.5V
10ns/DIV
1J-8
10ns/DIV
1J-9
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
C2
120pF
C2
120pF
C2
120pF
R4
56Ω
120Ω
R13
R4
56Ω
120Ω
R13
R4
56Ω
120Ω
R1
100Ω
Q1
2N3904
R1
100Ω
Q1
2N3904
R1
100Ω
Q1
2N3904
R2
33Ω
DC bias circuit at the output is an example from
several DC bias circuits available.
Output Peaking inductor is approx. (220nH to 680nH).
C1
120pF
R3
56Ω
33Ω
R2
C1
120pF
R3
56Ω
33Ω
R2
C1
120pF
R3
56Ω
Gain = R5
R1
Overshoot affects the EMI, try to reduce overshoot
as much as possible by adjusting R3, C1.
R3, C1 network will adjust the overshoot.
R4, C2 network will adjust the undershoot.
NOTES:
B-INPUT
G-INPUT
R-INPUT
R13
1.5KΩ
3W
R5
1.5KΩ
3W
R5
1.5KΩ
3W
R5
12V
47
9
8
7
6
4
3
C3
.01µF
C6
100µF
TAB
(HEAT SINK)
11
10
5
2
1
CVA2411TX
80V
C7
33µF
R7
2.2µF
2.2µF
C8
.1µF
FDH400
D1
C4
5.6KΩ
R7
FDH400
D1
C4
5.6KΩ
R7
FDH400
D1
2.2µF
C4
5.6KΩ
D2
FDH400
D2
FDH400
D2
FDH400
R14
1.5KΩ
R8
10KΩ
R8
10KΩ
R8
10KΩ
C5
.1µF
C5
.1µF
C5
.1µF
R10
1.5KΩ
Q2
2N3904
R8
1.5KΩ
R10
1.5KΩ
Q2
2N3904
R9
1.5KΩ
R10
1.5KΩ
Q2
2N3904
R9
1.5KΩ
330nH
L1
820Ω
R11
330nH
L1
820Ω
R11
330nH
L1
820Ω
R11
47Ω
R12
47Ω
R12
47Ω
R12
1H-40
B-OUTPUT
G-OUTPUT
R-OUTPUT
CVA2411TX
CORPORATION
FIGURE 2. APPLICATION CIRCUIT
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CVA2411TX
CORPORATION
Information furnished by Calogic is believed to be accurate and reliable. However, no responsibility is assumed for its use: nor for any infringement of patents or other
rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Calogic.
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
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